added check for files, closes #83
added check for files, closes #83

fereshteh-razmi/mimic-code,fereshteh-razmi/mimic-code,MIT-LCP/mimic-code-sharing,MIT-LCP/mimic-code,MIT-LCP/mimic-code,fereshteh-razmi/mimic-code,MIT-LCP/mimic-code,MIT-LCP/mimic-code-sharing